These large-scale geologic maps of New Jersey were produced cooperatively
by the U.S. Geological Survey and the New Jersey Geological Survey. This
ten-year effort has resulted in the most detailed state geologic map in the
nation. The Northern map covers New Jersey north of Flemington and New Brunswick
(40o30' N latitude); the Central and Southern maps cover the remainder
of the state. Bedrock Geologic Maps of Northern New Jersey and Central and
Southern New Jersey are the first completely new geologic maps of the state
since 1912 (revised 1950).